Because of how the 3rd Transformers Movie went down, this what the plot of the fourth film shpould be about
Three years after the battle in Chicago, the autobots continue to eliminate every decepticon on earth with N.E.S.T. assisting them. However, when the decepticcon Skyquake returns from the dead, resurrected by a fragment of the allspark, he engages the Nest forces on the streets of North Dakota and kills most of the soldiers. With Megatron dead and Cybertron destroyed, Skyquake takes command over the decepticons and begins Operation: Trypticon; which leads them into attacking every major military base in the United States and using bombs that unleash sudden bursts of the allsparks energy, turning their vehicles into decepticons and attacking every soldier in that base so that the human forces won't be much of a threat while the decepticons are at war with the autobots. Meanwhile, Sentinel Prime, the former autobot leader who betrayed Optimus and the other autobots over his attempts to rebuild Cybertron, is resurrected by Optimus with the Matrix to learn that his reason for betraying them was to prevent Skyquake from using the space bridge pillars for his ultimate weapon, Trypticon which is the source of why Sentinel claims that the autobots were never going to win the war. As Skyquake and the Predators intend to use Trypticon to destroy the Pentagon and bring humanity to its knees, the Autobots and the surviving N.E.S.T. team must act quickly and stop the decepticons from unleashing more havoc on Earth before all is lost.
Be sure to let Ethan Kruger now before he starts the script